Testing device



Aug. .30, 1932.

o.v E. J. ABRAHAMsoN TESTING DEVICE Filed July 18, 1928 Fi E.

3%@ www avda/LCI? Patented Aug. 30, 1932 l. OSCAR E. J. ABR'AHAMSON, OFBUFFALO, imw YORK, lisseivon 'ro AMEROAN anbraten' Y* y' coiuiuiivr,` onNEW YORLNQY., A conronnrroiv OFNEW JERSEY "rEs'friNe DEVICE f f VMyinvention relatesto newand useful provements'm testing-devices, and more,par-

ticularly to a device for use (in testingthe hardness of a body ofSandor the like.,

I v An object of my inventionV is to provide a .10 is simple, compactand eiicient inoperation.

' Theinventioniconsists in the improved construction and combination ofparts,.to be mo'refully described hereinafter, 'and the novelty of whichwill be particularly pointed 15 out and distinctly claimed. j l

In the accompanying drawing, tobe taken as a' part Ofthis specification,I have'fully and `clearly illustrated a preferred embodiment ofmy'inventiomin which drawing- Figure 1 isa top plan view ofthe testingdevice embodying my invention, and` v Fig. 2 is a vertical cent-ralsection thereof onthe line 2-#2 of Fig. 1, but with certain ofthe partsin' elevation'.` l s Referring to the drawingby characters of reference,1 designates a hollow tubular casing which is preferably cylindrical andcomprises guide means. Within the casing 1 is memberl 2 comprising aweight-member 3of metal, preferably brass, and `weighingsubstantiallyhalf a pound, and a penetration member'l also of metal andprefe'rablytool steel. In the lower end or bottom face 5 'of member 3 isl anaxialinternally `threaded recess 6. Theimember 4 has "asurrounding flange 7intermediate itsends and above which it is threaded fory engagementywith the internalthreadsV of recess 6. Below-the flange 7 the memberthas agdownward tav pered fconicalpoint 8, the angle of the pointpreferably being substantially 22%". The lower end ofthecasi'ng 1 isexternally threaded to receivea cfap'member 9 which serves as 'asupporting element and whichI is provided with a: central aperture 10 inthe axial lineof member 2,'such that member ,4 may project therethrough.The inside faceill of the membei' 9 serves as a stop means to limitdown'- ward movement of 'the member 2x Within the casinglabove'thie'member `21isfa cylini Y 4 Application md July-18:; 192s,serial in.293,643.

drical sleever 12.y of external diameter the casingnl. The'sleeve 12terminates at its Vupper end short of the top of the'casing, as

at. 13', toi provide a shoulder for a purpose to be described. The lowerend 14 of the sleeve 12 terminates atpa heightabove Vthe bottom face ofther element .9 -substantiallynequal to. the length of members 3` and 4to servefas la" stop means, such that when the topface 15, of member 3is engagementl with the `lower end 14 ofthe sleeve,` vthe tip16 of thepenetration member 4 will bein the planeof or: flush with theunder face17 of member or element 9. Themember ,14 may beprovided with guide .pins18 adjacent its upper ,and lowerends to ride on the inside faceiof oasfing 1 to aid in maintaining the member2 centrally or axiallypositionedinlthe `casing 1.- Through the sidewvallof thefcasing lisalongitudinal slot'19, into orthroughwhich projects a pin 20whichextends transversely` Afrom, the member 3 and which is rigid there#with. On the outside face lOf casing 1 isja catch membe'rz21 which issecured rigidlyin position by rivets or z the like-22,.which also serveto hold Vthejsleeve 12 inposition.l within the casing. The catchrmember21A includes a resilient arm 423 which terminatesin a hook 24 which`Overliesithe slotV 19 and1 engages stantially equal tothe: internaldiameter'of and lies beneath the pin'r20 when the member 2 is inretracted` position `with the top face 15 of member 3 inf engagementwith sleeve 12. lThe hoolr2t normallyliesfin the path of movement of thepin 20` and is pro'- vided'` with a cam face 25, so that onmovement ofthe member 2 'torretracted position, theA pin v20 will flex they catchmemberfout of its path and permitthe catch member to snap beneathyitinto lockingor holding .po. sition;v Thecatchmemberl lis providedwith parallel lugs 26 adjacentthe rivets 22 betweenwhich extends a pivotpin 27., Jour- Vnaledjon thepin 27 betweenlugsv 26 andfat substantiallyits midpoint, isa levermember 28.- `The lower endfof the member 28 issecured tol-the. resilient arm 23. a'djacentvhoolr 24by a-rivet orthelike 29'- The other-end v 28a of-lthe lever extends upwardly from thelugs '26 andprovides a -handngrip for Hex-ing A 2oy the arm 23 torelease the member 2. Axially of the member 3 in the top face 15thereof, is

Vflange33the member'32 is hollow, as at 34,

to Aform a Ysleeve having a helical slot 35.

Overlying the topvend of the casing 1 is a w.

ters Patent of the United States is :v

dialplate 'member 36, ypreferably circular, which seatson the shoulder13 and has a surrounding flange 37 which overlies and Seats on the endof the casing 1. TheY plate member 36 has indiciaf,38marking off thecircumferenceof the plate member N36 into thirty-twok equal parts, eachdivision 5 onI the dial indicatingy one( sixty-fourth of an inch ofmovement of the member 2. Above the dial plate member 36 is a pointer39, which is' mounted rigidly on one endof a-,shaft40 which projectsthrough va Vcentral bearing ap-` erture. 41 lin the member 36; OnV theshaft 40 between'the pointer and the'member 36, is a` bearing or spacerwasher42, and also'on l the shaft is a flan-ge 43 which engages'theunder face of member36. The shaft 40 depends into the cylindrical bore34 ofmember 32 and is provided with a cylindrical head 44 from which'Vprojects a pin 45 which runs in the slot 35.` On the plate member 36isan annulus 46v which supports a glass cover-plate 47. The member 36,annulus 46 and rplate 47 are'clfamped in position on the y n, casinglvby a 'sleeve48 which is threaded 011th@ Casing 1, as at 49, and has aninwardly extendingV flange 550, which overlies Vthe plate 47. 1 o Y Theoperation of my vdevice is as follows:

The devicel is'particularly vadapted forv determining the hardness ofmolding sand, but

it is evident that it may also be 4used in determining the hardness ofother finely divided bonded material. The member 2 is raised'to ,e itsretracted position, as shown in Fig.v 2, which will yset the'dialpointer 39 inthe posil tion'of Figfl and at aero.' The device is thenplaced upon Ya body of molding sand of which it is desired to determinethe hardness, with the lower face 17 of element 9 supportingthe deviceandA being flush with the top face of theY sand. .c Thelever 28 isv nowoperated to release pin 20, permitting the weighted member 2 to descendby' force of 'gravity and press the pointed penetration member 4 intothe sand.` As the weighted member 2 presses the point 16 into the testmateriahthe pin 45 will ride in the spiral groove 35, thusf causingrotation of the yshaft 4() and the pointer A.39 which will indicate onthe scale or n dial 38 the number of sixty-fourths of an inch which thetip 16 of point 8 of member 4 has moved into'the sand, or the extent ofmovement of the member 2. The number of sixty-fourths of an inch whichthe half pound weight member 2pushes the point 16 into the mold ma'- howtightly it is packed. It is apparentA that I have thus provided a deviceby which the relative hardness of molding sands may be readiydetermined, and by which it may be ascertained if. a moldingv sandk vofthe requisite hardness'for the desired molding operation has beenprovided.

Vhat I claim and desire to secureby Letf v`1 "In a'device ofthecharacter described, a tubularguide means, aweighted memberVreciprocable within said means and having a penetration'membergat itslower end, said weighted member being movable within said guide means byforce of gravity and being adapted to occupy a retracted position, meansclosing the upperv end' of said guideV means, and means carried by saidclosing means andy cooperable with said-weighted member to indicate the,extent .of movement of .said weighted member under force of gravity fromsaid'retracted position, j 2. In a device of the character described, atubular casing comprising guide means, a weighted member reciprocableinsaidicasing, said member falling freely under the force of gravity uponits release, a penetration member carried by said weighted member andVprojecting from the lower end 'of said casing when said weightedmembermoves undery fins the force of gravity upon release of saidholding means. v c

3. Inadeviceof the character described, a tubular .casing comprising'guidemeans, a weighted member reciprocable in-,said casing, said memberfallingfreely under @the force of gravity upon its release, saidweighted member being adapted to occupy a retracted position insaid'casing and having apenetration member at its lower end, means tohold said member releasably in retractedlposition against the force'ofgravity, a Vdial plate closing the upper end of said Vcasing and havingindicia thereon, a pointer cooperable with saiduindicia to in dicate'the extent of free falling movement of said weighted .member fromretracted Vposition under the force yof gravity. and means operativelyconnecting said pointer and vsaid weighted member.

4. In a device of the character described, a weighted member having apenetration 'member at its lowerend, means to guide said weighted memberfor free vertical' movement under the force of gravity, said memberbeing adapted to occupy a retracted position, a plate member supportedon said guide means' and carrying indicia, a pointer having a shaft andmounted on said plate member for oscillation and cooperable with saidindicia, said shaft having a transverse pin, and a cylin-` drical membercarriedby said weighted member and projecting upwardly therefrom andhaving a helical slot, said pin projecting into said slot wherebymovement of said weighted member under the force of gravity will causerotation of said shaft to move said pointer to indicate the extent ofmovement of saidV weighted member from retracted position;

5. In a device of the character described, a

weighted member having a penetration member at its lower end, means toguide said weighted member for free vertical movement under the force ofgravity, said member being i 2- adapted to occupy a retracted position,a

plate member supported on said guide means and carrying indicia, apointer having a vertical depending shaft and mounted on said platemember for oscillation and cooperable with said indicia, said shafthaving a transf verse pin, and a sleeve carried Yby said weighted memberand projecting upwardly therefrom around said shaft and having a helicalslot, said pin projecting into said slot 3 whereby movement of saidweighted member under the force of gravity will cause rotation of saidshaftto move said pointer to indicate the extent of movement of saidweighted member from retracted position. Y

In testimony whereof I have hereunto signed my name.

osoAR E. J. ABRAHAMSON.

